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' 2 813 t -Sh A. I -[ANI Jr. as s 8813 1 COFFEE CLEANER Patented Sept. 27,1881.

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INVENTOR:

W lll WITNESSES:

ATTORNEYS.

(No Model.) I I A. WAKEMAN JR heats Sheet 2.

COFFEE CLEANER.

Patented Sept. 27, 1881.

INVENTOR WITNESSES UNITED STATES PATENT OFFICE.

ABRAM WAKEMAN, JR, onv NEWYORK, N. Y.

COFFEE-CLEANER.

SPECIFICATION forming part of Letters Patent No. 247,716, dated. September 2'7, 1881.

Application filed January 20, 1881. (N0 model.)

To allwhom it may concern Be it known that I, ABRAM WAKEMAN, J r., of the city, county, and State of New York, have invented a new anduseful Improvement in Coffee-Cleaners, of which the following is a specification.

Figure 1, Sheet 1 is a sectional side eleva-- Fig. 2, Sheet 2, is.

tion of the improvement. an elevation of the inlet end of the same. Fig. 3, Sheet 2, is an elevation of the discharge end of the same. Fig. 4, Sheet 2, is a sectional end elevation of the cleaner taken through the line a; m, Fig. 1. Fig. 5, Sheet 2, is a sectional end elevation of the cleaner taken through the line y y, Fig. 1.

Similar letters of reference indicate corresponding parts.

The object of this invention is to facilitate the removal of dust and other impurities from coffee-berries.

In the accompanying drawings, A represents the supporting-frame, to which are attached bearings in which revolve the hollow journals B of the cylinder G. The cylinder 0 is set in a slightly-inclined position, and its lower end or head, E, is attached directly to its journal B. The upper end of the cylinder 0 is connected with its journal B by radial arms D.

The middle part, F, of the upper head of the.

cylinder 0 is separate, overlaps the outer or ring part, G, and is held stationary by being connected with the frame A by hinged bolts H, or other suitable means. In the stationary middle part, F, of the upper head is formed an openiug to receive the lower end of the feed-spout I, the upper end of which is connected with the hopper J. The hopper J is attached to the frame A, and is provided at its discharge-openin g with a valve, K, so that the feed can be regulated as desired. The upper partof the shell of the cylinder 0 is formed of wire-gauze L, or other suitable material, tov sift out the loose dirt that may be upon the cofleebe-rries. The middle and lower parts, M, of the shell of the cylinder G are formed of wood or other suitable material, and are provided with inwardlyprojecting spikes N, as shown in Figs. 1 and 5.

To the inner surface of the shell of the cylinder 0 are attached longitudinal bars or ribs 0, to serve as buckets to carry up the coffeeloerries as the said cylinder is revolved.

Pis an inner cylinder, the lower end of which revolves upon the inwardly-projecting end of the hollowjournal B, or is provided with a hollow journal which passes through and revolves in the said hollow journal B. To the upper end of the cylinder P is attached a hollow journal, Q, which passes through and revolves in the hollow journal B of the outer cylinder, 0. The shell of the inner cylinder, P, is formed of wood lined with metal, or of other suitable material, and is provided with outwardly-projecting spikes R. inder, P, is provided with numerous small holes, as shown in Figs. 1 and 5, for the passage of air, and has a partition, S, at a little distance from its lower end, dividing its interior into two unequal compartments, as shown in Fig. 1. To the projecting end of the upper hollow bearing, B, is attached a large pulley, T, to receive a driving-belt, and to the projecting end of the upper hollow journal, Q, of the inner cylinder, P, is attached a small pulley, U, to receive a driving-belt, so that'the inner cylin-- der, P, will be driven at a much greater speed than the outer cylinder, G. The two cylinders are driven in opposite directions.

V is a coiled pipe placed within the hollow cylinder P, and the ends of which are connected with or pass through the hollow jour nals of the cylinder P, so that steam can enter through the upper journal and escape through the lower journal. The part of the steam-pipe V that passes through the small compartment at the lower end of the cylinder P is straight, and is perforated with a number of fine holes to allow enough steam to escape to properly moisten the coEee-herries before they escape from the cylinder 0. In the lower end of the cylinder 0, at or near its outer edge, are formed a number of openings, W, through which the coffee-berries escape. In the side of the cylinder U is formed a man-hole,X, which is closed by a cap-plate, Y. The cylinder 0 is strengthened by hoops Z, as shown in Fig. 1.

In using the machine the cofieeberries are introduced into the upper end of the cylinder 0, and theloose dirt escapes through the screen L. As the berries pass slowly down through the space between the cylinders O P they are carried up by the ribs 0 and are discharged upon the spikes It of the inner cylinder, P, and

The shell of the inner cylare projected from the inner cylinder, P, by the rapid'revolution of the said cylinder P against the spikes of the outer cylinder, 0, so that the berries will pass back and forth between the spiked shells of the two cylinders, being all the time rubbing against each other and the spikes, and will have all the d irtrubbed, scraped, and knocked oit' before the said herries reach the discharge end of the cylinder 0. As the berries pass toward the lower part of the machine they are dried by the heat from the steam-pipe V, to cause the dirt to rub off more easily, and as they approach the lower end of the machine they are moistened by the steam from the perforated part of the said steam-pipe V, so that they will contain about the same amount of moisture when they are discharged as when they entered the machine.

The inclination of the cylindersOP, and consequently the rapidity of feed, is regulated by raising and lowering thebearings aat the lower end of the machine.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- In a coffee-cleaner, the combination of two oppositely-revolving cylinders, O P, the outer one having spikes and longitudinal ribs on the inside and the inner cylinder provided with spikes on the outside, whereby the berries may be introduced between the cylinders, carried up by the ribs, dropped on the spikes of the inner cylinder, and thence thrown against the spikes of the outer cylinder, as described.

ABRAM WAKEMAN, JR.

Vitnesses J AMES T. GRAHAM, O. SEDGWICK. 

